CN104018388A - Cup mat body paper and production method thereof - Google Patents
Cup mat body paper and production method thereof Download PDFInfo
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- CN104018388A CN104018388A CN201410268831.7A CN201410268831A CN104018388A CN 104018388 A CN104018388 A CN 104018388A CN 201410268831 A CN201410268831 A CN 201410268831A CN 104018388 A CN104018388 A CN 104018388A
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Abstract
The invention belongs to the paper making technology and relates to cup mat body paper and a production method thereof. The cup mat body paper is formed by a face layer, a core layer and a bottom layer. Two of needle-point leaf wood pulp, hardwood pulp and mechanical pulp are used as raw material pulp of all the layers. A starch layer is formed between every two layers in a spraying mode so as to improve the bonding strength between every two layers. The needle-point leaf wood pulp is bleached sulfate process needle-point leaf wood pulp, the hardwood pulp is bleached sulfate process hardwood pulp, and the mechanical pulp is chemically bleached hot-ground mechanical pulp. A common triple-lap long-net multi-cylinder paper machine can be used for producing the cup mat body paper which is high in water-absorbing property and large in bulk, meets the requirement of the hygienic standard of the body paper for food packaging and is used for placing food and being packaged in bottle covers.
Description
Technical field
The invention belongs to paper technology, relate to a kind of plate mat body paper and production method thereof.
Background technology
The plate mat body paper that existing market is sold and used, is generally all used white board or paperboard class paper, even also uses art paper or coated duplex board with grey back.Although white board or paperboard class paper can reach for processing the object of plate mat after clad aluminum foil, but use white board or paperboard to carry out the problem that clad aluminum foil processing plate mat exists following several respects: first, because white board or paperboard class paper often contain fluorescent whitening agent, can not be for the bottle cap inner packing of food; The second, white board or the general bulk of paperboard class paper are at 1.4cm
3below/g, the high bulk requirement of plate mat can not be met, the object economizing on resources can not be reached again.The 3rd, the processing characteristics during for bottle cap inner packing when meeting plate mat body paper clad aluminum foil plays the in-built food humidity resistance of bottle simultaneously, requires paper must have high water imbibition, and this is the characteristic that plain paper does not have.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of and can produce high-hydroscopicity, high bulk by common triple-lap fourdrinier wire wire multi-cylinder paper machine, meets that base paper for foodstuff packaging sanitary standard requires for placing plate mat body paper and the production method thereof of the bottle cap inner packing of food.
Plate mat body paper of the present invention consists of surface layer, sandwich layer, bottom, and the raw material slurry of each layer is two kinds of paper pulp raw materials in softwood pulp, hardwood pulp and mechanical pulp, and interlayer arranges stratum granulosum that spray pattern forms to improve the bond strength of layer and interlayer; Described softwood pulp is that bleached sulphate method softwood pulp, hardwood pulp are that bleached sulphate method hardwood pulp, mechanical pulp are chemical bleaching thermomechanical pulp.
The raw material of described surface layer and bottom forms and weight proportion is softwood pulp 10%-30%, hardwood pulp or mechanical pulp 70%-90%, and surface layer, bottom paper pulp account for respectively 20% of oven dry stock weight; The raw material of sandwich layer forms and weight proportion is softwood pulp or hardwood pulp 10%-30%, mechanical pulp 70%-90%, and sandwich layer paper pulp accounts for 60% of oven dry stock weight.
Plate mat base paper production method of the present invention comprises the following steps:
1) pulverize, the base stock slurry that is just selected from softwood pulp, hardwood pulp and mechanical pulp is made paper pulp through defibrination, and the pulping freedom CSF of paper pulp raw material controls: softwood pulp 420-470mL, hardwood pulp 460-520mL, mechanical pulp 400-490mL;
2) batching and starching, according to the composition of raw materials of surface layer, bottom, sandwich layer, at dosing chamber separately, prepare burden respectively, the raw material of surface layer and bottom forms and weight proportion is softwood pulp 10%-30%, hardwood pulp or mechanical pulp 70%-90%, surface layer, bottom paper pulp account for respectively 20% of oven dry stock weight; The raw material of sandwich layer forms and weight proportion is softwood pulp or hardwood pulp 10%-30%, mechanical pulp 70%-90%, and sandwich layer paper pulp accounts for 60% of oven dry stock weight; Batching and upper slurry process also add wet reinforcing agent, gum rosin, aluminum sulfate, filler and reservation auxiliary agent successively;
3) manufacture paper with pulp, three layers of slurry after batching divide three layers to enter wet end and manufacture paper with pulp, and each interlayer spraying forms compound, squeezing after starch adhesive linkage; Starch consumption accounts for 1～6% of oven dry stock weight;
4) after the semi-finished product drying after manufacturing paper with pulp, press polish, make plate mat body paper.
In described batching and upper slurry process, proportioning materials passes through successively dosing chamber, copies forebay and header box, and material starching arranges scummer and the pressurized screen of fan pump successively through entrance; At dosing chamber, add the daiamid epoxy chloropropane reinforcing agent that wets, consumption is the 0.05-0.20% of oven dry stock weight, is preferably 0.08%-0.15%; In header box, add gum rosin, consumption is the 0.0-0.6% of oven dry stock weight; At fan pump entrance, add aluminum sulfate, consumption is the 0.0-0.8% of oven dry stock weight; In fan pump exit, add talcum powder, consumption is the 5-20% of oven dry stock weight; After pressurized screen, add polyacrylamide to retain auxiliary agent, consumption is the 150-350ppm of oven dry stock weight.
The described operation material of manufacturing paper with pulp is successively through flow box, the wet end with sprayer unit, press section; Spraying raw material, becomes percentage by weight 5～9% by starch thin up, atomisation pressure 0.06～0.15MPa.
Advantage applies of the present invention exists: the kind by paper pulp raw material is selected, proportioning combination and control defibrination freedom, adopt special chemical addition agent technique, on common triple-lap fourdrinier wire wire multi-cylinder paper machine, increase sprayer unit and corresponding spray art, just can produce and there is high bulk, the applicable sheet paper products of doing plate mat packing instructions of high-hydroscopicity, avoided coating class, the impact of the fluorescent whitening agent adding in the paper productions such as white board on health, make the sanitation performance of paper reach the requirement of state food packing by body paper sanitary standard, the needs of food stage packing have been met, such as doing the internal liner package of food stage bottle cap, play health and the moisture-proof function of protection bottled food.
Accompanying drawing explanation
Fig. 1 is the process route chart of the embodiment of the present invention.
The specific embodiment
Below in conjunction with specific embodiment, the present invention is described further.
Embodiment 1,350g/m
2category-A plate mat production stage
1) pulverize, the paper pulp that softwood pulp, hardwood pulp and three kinds of base stocks of mechanical pulp are made through defibrination, the pulping freedom CSF of paper pulp raw material controls: softwood pulp 430mL, hardwood pulp 500mL, mechanical pulp 430mL;
2) batching and starching, prepare burden at dosing chamber separately respectively according to the composition of raw materials of surface layer, bottom, sandwich layer, and the raw material of surface layer and bottom consists of softwood pulp and hardwood pulp; The raw material of sandwich layer consists of softwood pulp and mechanical pulp; Batching and upper slurry process also add wet reinforcing agent, gum rosin, aluminum sulfate, filler and reservation auxiliary agent successively;
3) manufacture paper with pulp, three layers of slurry after batching divide three layers to enter wet end and manufacture paper with pulp, and each interlayer spraying forms compound, squeezing after starch adhesive linkage;
4) after the semi-finished product drying after manufacturing paper with pulp, press polish, make plate mat body paper.
In this embodiment, process units production capacity is 120t/d.Use common triple-lap fourdrinier wire wire multi-cylinder paper machine and increase spray art device and produce, by pulverize → defibrination of pulpboard → prepare burden → add filler and the dehydration → squeezing → oven dry → press polish of chemical addition agent → online → interlayer spray starch → wet end → batch to process and make plate mat body paper; It is as follows that production main technique is controlled parameter:
(1) weight portion formula:
Face, bottom paper pulp raw material
Hardwood pulp 300kg, softwood pulp 100kg, hardwood pulp: softwood pulp=75: 25,
Sandwich layer paper pulp raw material
Mechanical pulp 510kg, softwood pulp 90kg, mechanical pulp: softwood pulp=85: 15,
Filler talcum powder 130kg, filler: paper pulp=13: 100,
Chemical addition agent: gum rosin 3kg (over dry), aluminum sulfate 4kg, the wet reinforcing agent 1.2kg (over dry) of daiamid epoxy chloropropane, polyacrylamide retains auxiliary agent 0.3kg, chemical addition agent: paper pulp=0.85: 100.
(2) defibrination freedom CSF: softwood pulp 420mL; Hardwood pulp 500mL; Mechanical pulp 430Ml.
(3) interlayer spray starch:
Spraying becomes percentage by weight 6% with cornstarch thin up, 3 of showers, and atomisation pressure: 0.08～0.1MPa, requires spraying to be vaporific, every spray amount 2～3g/m2, starch consumption accounts for 2～3% of oven dry stock weight.
The quality index of the former paper product of plate mat is in Table 1:
Table 1350g/m
2the quality index of the former paper product of category-A plate mat
Embodiment 2,380g/m
2category-B plate mat body paper production stage:
1) pulverize, softwood pulp, mechanical pulp base stock are made to paper pulp through defibrination, the pulping freedom CSF of paper pulp raw material controls: softwood pulp 440mL, mechanical pulp 430mL;
2) batching and starching, prepare burden at dosing chamber separately respectively according to the composition of raw materials of surface layer, bottom, sandwich layer, and the raw material of surface layer and bottom consists of softwood pulp and mechanical pulp; The raw material of sandwich layer forms and weight proportion is softwood pulp and mechanical pulp; Batching and upper slurry process also add wet reinforcing agent, gum rosin, aluminum sulfate, filler and reservation auxiliary agent successively;
3) manufacture paper with pulp, three layers of slurry after batching divide three layers to enter wet end and manufacture paper with pulp, and each interlayer spraying forms compound, squeezing after starch adhesive linkage;
This embodiment process units production capacity is 125t/d.Use common triple-lap fourdrinier wire wire multi-cylinder paper machine and increase spray art device and produce, by pulverize → defibrination of pulpboard → prepare burden → add filler and the dehydration → squeezing → oven dry → press polish of chemical addition agent → online → interlayer spray starch → wet end → batch to process and make plate mat body paper; It is as follows that production main technique is controlled parameter:
Production main control parameters is as follows:
(1) weight portion formula:
Face, bottom paper pulp raw material
Mechanical pulp 300kg, softwood pulp 100kg, mechanical pulp: softwood pulp=75: 25,
Sandwich layer paper pulp raw material
Mechanical pulp 540kg, softwood pulp 60kg, mechanical pulp: softwood pulp=90: 10,
Filler talcum powder 100kg, filler: paper pulp=10: 100,
Chemical addition agent: aluminum sulfate 3kg, the wet reinforcing agent 1.7kg (over dry) of daiamid epoxy chloropropane, polyacrylamide retains auxiliary agent 0.3kg, chemical addition agent: paper pulp=0.5: 100
(2) defibrination freedom CSF: softwood pulp 440mL; Mechanical pulp 450mL
(3) interlayer spray starch:
Spraying becomes percentage by weight 8% with cornstarch thin up, 3 of showers, and atomisation pressure: 0.08～0.1MPa, requires spraying to be vaporific, every spray amount 2.5～3.5g/m2, starch consumption accounts for 2.5～4.5% of oven dry stock weight.
The quality index of the former paper product of plate mat is in Table 2:
Table 2380g/m
2the quality index of the former paper product of category-B plate mat
Embodiment 3,380g/m
2category-A plate mat body paper and production method thereof
1) pulverize, the paper pulp that softwood pulp, hardwood pulp and three kinds of base stocks of mechanical pulp are made through defibrination, the pulping freedom CSF of paper pulp raw material controls: softwood pulp 430mL, hardwood pulp 500mL, mechanical pulp 430mL;
2) batching and starching, prepare burden at dosing chamber separately respectively according to the composition of raw materials of surface layer, bottom, sandwich layer, and the raw material of surface layer and bottom consists of softwood pulp and hardwood pulp; The raw material of sandwich layer consists of softwood pulp and mechanical pulp; Batching and upper slurry process also add wet reinforcing agent, gum rosin, aluminum sulfate, filler and reservation auxiliary agent successively;
3) manufacture paper with pulp, three layers of slurry after batching divide three layers to enter wet end and manufacture paper with pulp, and each interlayer spraying forms compound, squeezing after starch adhesive linkage;
4) after the semi-finished product drying after manufacturing paper with pulp, press polish, make plate mat body paper.
In this embodiment, process units production capacity is 140t/d.Use common triple-lap fourdrinier wire wire multi-cylinder paper machine and increase spray art device and produce, by pulverize → defibrination of pulpboard → prepare burden → add filler and the dehydration → squeezing → oven dry → press polish of chemical addition agent → online → interlayer spray starch → wet end → batch to process and make plate mat body paper; It is as follows that production main technique is controlled parameter:
(1) weight portion formula:
Face, bottom paper pulp raw material
Hardwood pulp 300kg, softwood pulp 100kg, hardwood pulp: softwood pulp=75: 25,
Sandwich layer paper pulp raw material
Mechanical pulp 540kg, softwood pulp 60kg, mechanical pulp: softwood pulp=90: 10,
Filler talcum powder 110kg, filler: paper pulp=11: 100,
Chemical addition agent: gum rosin 4kg (over dry), aluminum sulfate 4.7kg, the wet reinforcing agent 1kg (over dry) of daiamid epoxy chloropropane, polyacrylamide retains auxiliary agent 0.3kg, chemical addition agent: paper pulp=1: 100,
(2) defibrination freedom CSF: softwood pulp 430mL; Hardwood pulp 500mL; Mechanical pulp 420mL,
(3) interlayer spray starch:
Spraying becomes percentage by weight 6.5% with cornstarch thin up, 3 of showers, and atomisation pressure: 0.08～0.1MPa, requires spraying to be vaporific, every spray amount 2.0～3.5g/m2, starch consumption accounts for 2～4% of oven dry stock weight.
The quality index of the former paper product of plate mat is in Table 3:
Table 3380g/m
2the quality index of the former paper product of category-A plate mat
When production is carried out, by softwood pulp, hardwood pulp and mechanical pulp disperse through hydrabrusher successively, be stored in and do not kowtow pond, after defibrination, be stored in and kowtowed pond, according to proportioning by softwood pulp, hardwood pulp and mechanical pulp are put into dosing chamber and are mixed, and synchronously add the daiamid epoxy chloropropane reinforcing agent that wets, the mixed slurry configuring is sent into and destroyed forebay, header box, in header box, add gum rosin, slurry arrives fan pump through header box, at fan pump entrance, add aluminum sulfate, in fan pump outlet, add talcum powder, after scummer, slurry enters pressurized screen, in pressurized screen outlet, add polyacrylamide to retain auxiliary agent, slurry is through flow box and wet end drainage and formation, carry out interlayer spraying, enter press section, cylinder dried, controlling baking temperature is 40 ℃～130 ℃, then enter press polish, coiling process, finally by completing, be organized into paper.Above-mentioned interlayer spray operation is used the sprayer unit of setting up to carry out, the water diluent raw material of cornstarch is sent into accumulator tank after by filter, start pump material in accumulator tank is sent into shower, by each group nozzle compressed air pressurized, control atomisation pressure, to between the page surface layer before compound after net part forming and sandwich layer and between sandwich layer and bottom, make nozzle carry out spray application towards the page surface of sandwich layer, require spraying to be vaporific, the spray material that in shower, spray does not fall returns to filter inlet via return duct.
The product of the embodiment of the present invention, its key performance high bulk aspect, owing to adopting process plate mat body paper bulk category-A paper >=1.5cm3/g of the present invention, category-B paper >=1.8cm3/g, white board with bulk below 1.4cm3/g or paperboard class paper are compared, more than saving respectively paper pulp raw material 7.1% and 28.6% in the situation of identical usable floor area, and the chemical bleaching thermomechanical pulp that uses in a large number high yield replaces bleached sulphate method needle, hardwood pulp has further reduced the consumption of paper production to trees raw material, there is good economic benefit and social benefit.Key performance high-hydroscopicity aspect, for the needs in purposes, adopts process plate mat body paper of the present invention to set the high-hydroscopicity index of different levels, and the processing characteristics when meeting plate mat body paper clad aluminum foil plays the in-built food humidity resistance of bottle simultaneously.Category-A paper water imbibition is controlled at 2-25min at present, category-B paper water imbibition is controlled in 60s.Water imbibition refers to that paper surface absorbs the speed of moisture, and water imbibition survey method, for splashing into 1 distilled water with dropper in the about 1cm eminence of the tested paper of distance, starts timing simultaneously.During operation, the dropper about 45° angle that should tilt, so that every dropping liquid amount is 0.06mL.When distilled water splashes on the paper at a place water droplet, be absorbed to be when mirror-like has just disappeared and stop timing, writing time should be accurately to 1s.
Claims (6)
1. a plate mat body paper of the present invention, by surface layer, sandwich layer, bottom, formed, it is characterized in that: the raw material slurry of each layer is two kinds of paper pulp raw materials in softwood pulp, hardwood pulp and mechanical pulp, interlayer arranges stratum granulosum that spray pattern forms to improve the bond strength of layer and interlayer; Described softwood pulp is that bleached sulphate method softwood pulp, hardwood pulp are that bleached sulphate method hardwood pulp, mechanical pulp are chemical bleaching thermomechanical pulp.
2. plate mat body paper according to claim 1, the raw material of described surface layer and bottom forms and weight proportion is softwood pulp 10%-30%, hardwood pulp or mechanical pulp 70%-90%, surface layer, bottom paper pulp account for respectively 20% of oven dry stock weight; The raw material of sandwich layer forms and weight proportion is softwood pulp or hardwood pulp 10%-30%, mechanical pulp 70%-90%, and sandwich layer paper pulp accounts for 60% of oven dry stock weight.
3. a plate mat base paper production method, is characterized in that: comprises the following steps,
1) pulverize, the base stock that is just selected from softwood pulp, hardwood pulp and mechanical pulp is made paper pulp through defibrination, and the pulping freedom CSF of paper pulp raw material controls: softwood pulp 420-470mL, hardwood pulp 460-520mL, mechanical pulp 400-490mL;
2) batching and starching, according to the composition of raw materials of surface layer, bottom, sandwich layer, at dosing chamber separately, prepare burden respectively, the raw material of surface layer and bottom forms and weight proportion is softwood pulp 10%-30%, hardwood pulp or mechanical pulp 70%-90%, surface layer, bottom paper pulp account for respectively 20% of oven dry stock weight; The raw material of sandwich layer forms and weight proportion is softwood pulp or hardwood pulp 10%-30%, mechanical pulp 70%-90%, and sandwich layer paper pulp accounts for 60% of oven dry stock weight; Batching and upper slurry process also add wet reinforcing agent, gum rosin, aluminum sulfate, filler and reservation auxiliary agent successively;
3) manufacture paper with pulp, three layers of slurry after batching divide three layers to enter wet end and manufacture paper with pulp, and each interlayer spraying forms compound, squeezing after starch adhesive linkage; Starch consumption accounts for 1～6% of oven dry stock weight;
4) after the semi-finished product drying after manufacturing paper with pulp, press polish, make plate mat body paper.
4. plate mat base paper production method according to claim 3, is characterized in that: in described batching and upper slurry process, proportioning materials passes through successively dosing chamber, copies forebay and header box, and material starching arranges scummer and the pressurized screen of fan pump successively through entrance; At dosing chamber, add the daiamid epoxy chloropropane reinforcing agent that wets, consumption is the 0.05-0.20% of oven dry stock weight; In header box, add gum rosin, consumption is the 0.0-0.6% of oven dry stock weight; At fan pump entrance, add aluminum sulfate, consumption is the 0.0-0.8% of oven dry stock weight; In fan pump exit, add talcum powder, consumption is the 5-20% of oven dry stock weight; After pressurized screen, add polyacrylamide to retain auxiliary agent, consumption is the 150-350ppm of oven dry stock weight.
5. plate mat base paper production method according to claim 4, is characterized in that: the wet reinforcing agent of daiamid epoxy chloropropane adding at dosing chamber, consumption is the 0.08%-0.15% of oven dry stock weight.
6. plate mat base paper production method according to claim 3, is characterized in that: described in manufacture paper with pulp operation material successively through flow box, the wet end with sprayer unit, press section; Spraying raw material, becomes percentage by weight 5～9% by starch thin up, atomisation pressure 0.06～0.15MPa.
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Inventor after: Liu Cunfen Inventor after: Chen Guoping Inventor after: Dai Luogen Inventor after: Tan Ninghua Inventor after: Cai Zhaobin Inventor after: Zhang Li Inventor after: Gu Keqiang Inventor before: Liu Cunfen Inventor before: Chen Guoping Inventor before: Dai Luogen Inventor before: Tan Ninghua Inventor before: Cai Zhaobin Inventor before: Zhang Li |
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